Product brief introduction

440 a quench hardening stainless steel, high hardness, excellent performance of a 440 b 440 c steel and steel with high toughness.
Used for cutting, measuring tool, bearing.

Product Parameter

        C：0.60~0.75
　　 Mn：≤1.00
　　 Si：≤1.00
　　 Cr：16.0~18.0
　　 Ni②：—
　　 P：≤0.04
　　 S：≤0.03
　　 Mo：≤0.75

Technical Equipment

440 a quench hardening, high hardness, excellent performance of the 440 b, 440 c steel and steel with high toughness.
440 b is used for cutting, measuring tools, bearings and valves, compared with 440 a steel, high hardness, toughness is 440 c steel.
440 c with all the highest hardness of stainless steel, heat-resistant steel, used for nozzle, bearing.
440 f is to improve the performance of free cutting steel, steel 440 c for automatic lathe.